Centaurus A - Adam Lundie - Eatons Hill Observatory

Centaurus A

Centaurus A thumbnail
Centaurus A
Centaurus A is a peculiar galaxy discovered in 1826 by Scottish astronomer James Dunlop in Parramatta, Australia. It is ~10-16 million light years away and its lenticular with dust lanes hybrid appearance is the result of a merge of two galaxies.


  • 57x 300s Lum bin1x1
  • 16x 150s Red bin2x2
  • 16x 150s Green bin2x2
  • 16x 150s Blue bin2x2

Total exposure 6 hours 45 minutes.


  • Skywatcher Black Diamond ED120
  • SkyWatcher EQ8 Pro Mount
  • QSI 683-ws Camera @ -15°C
  • Astronomik typ 2c LRGB filters
  • Starlight Xpress Lodestar X2 Autoguider
  • Innovations Foresight On Axis Guider
  • Starlight Instruments Focus Boss II


  • Orange zone in Brisbane, Australia. (Bortle 7)
  • Imaged over 4 nights. High humidity and 50%-full moon.


  • Planning & camera alignment with Aladin 9
  • Captured with AstroArt 6
  • Guiding with PHD2 + PHD_Dither
  • Live focusing with FocusLock
  • CCDInspector: Image analysis & rejection
  • CCDStack 2+: Calibrate, align, stack, deconvolution, combine RGB.
  • Photoshop CC: Curves, high pass filter, combine L+RGB, color balance, saturation.